Indoor PDR Positioning Assisted by Acoustic Source Localization, and Pedestrian Movement Behavior Recognition, Using a Dual-Microphone Smartphone

Figure 3

Schematic diagram of the scene. (a) Typical stairs found in connected buildings. (b) Longitudinal section view of stairs. (c) Curve of acceleration values as a pedestrian is walking on the stairs.

(a)

(b)

(c)